Power plants – Motor operated by expansion and/or contraction of a unit of... – Mass is a solid
Patent
1988-12-21
1989-12-19
Ostrager, Allen M.
Power plants
Motor operated by expansion and/or contraction of a unit of...
Mass is a solid
60528, 337140, F03G 706
Patent
active
048874302
ABSTRACT:
In a bistable shape memory effect, SME, mechanism having first and second opposing shape memory effect, SME, elements (16, 20) moving an actuator (12) along a travel stroke between respective first and second positions upon heating of the respective SME element above its transition temperature mechanical frictional retainers are provided for holding the actuator at the end of its travel stroke, including after cooling of the respective SME element and return repose movement thereof. One embodiment provides a detent retainer (38, 40, 42, 44, 46). Another embodiment provides a friction wedge retainer (12a, 12b, 14a, 14b, 12c, 12d, 14c, 14d). Another embodiment provides a resiliently biased friction member (50, 52) and a lost motion coupling (56, 58) between the actuator and the SME elements.
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Baran Michael S.
Kroll John W.
Mading James E.
Eaton Corporation
Ostrager Allen M.
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